Solution : https://service.sap.com/sap/support/notes/545362 (SAP Service marketplace login required)
Key words :
customer-specific account assignment field, customer-specific special ledger, trading partner business area, business area balance sheet, real estate account assignment, special general ledger items, data element umsks, field status group, field status, account item
Related Notes :
827413 | FI: Changeability of fields in FI documents |